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Module 8

Module 9

Module 10

External Anatomy Worksheet

5 Points
(each error costs 0.25 point)

1.   Starting from the outside of an insect's body, list the component layers of the exoskeleton in their correct order.
 
 
 
 
 


2.   Make each statement true:
   An    is a finger-like invagination of the exoskeleton.
   An    is a ridge-like invagination of the exoskeleton.
     provide structural rigidity and a site for attachment of muscles.


3.   Identify each lettered sclerite or suture on this schematic drawing of an insect head:
     
       
  A.
  B.
  C.
  D.
  E.
       


4.   Put a check mark by each statement that is TRUE :
Maxillae are located just in front of the mandibles
The labrum is the backlip (most posterior mouthpart).
Both the labium and maxillae may bear sensory palps.
The hypopharynx is a muscle inside the head capsule.
In haustellate mouthparts, the labium forms a sheath that surrounds the feeding stylets.


5.   Name the three segments of an insect's thorax from anterior to posterior:
     


6.   On which thoracic segment(s) would you find:
   Walking legs
   Forewings
   Hindwings
   Elytra
   Halteres


7.   Identify each lettered structure on this schematic diagram of a mantis leg:
  A.
  B.
  C.
  D.
  E.


8.   Put a check by all structures that might be found on an insect's abdomen:
Prolegs Hemelytra Pleural sclerite
Furcula Epiproct Valvulae
Aedeagus Cerci Tegmina


9.   Dorsal-ventral muscles power the    and dorso-longitudinal muscles power the   of an insect's wings.  When these muscles are under   control, wing beat frequency is relatively   because contractions are regulated by individual nerve impulses.




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